1/*
2 * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "JSHTMLDocument.h"
28
29#include "Frame.h"
30#include "HTMLAllCollection.h"
31#include "HTMLBodyElement.h"
32#include "HTMLCollection.h"
33#include "HTMLDocument.h"
34#include "HTMLElement.h"
35#include "HTMLIFrameElement.h"
36#include "HTMLNames.h"
37#include "JSDOMWindow.h"
38#include "JSDOMWindowCustom.h"
39#include "JSDOMWindowShell.h"
40#include "JSHTMLCollection.h"
41#include "JSMainThreadExecState.h"
42#include "SegmentedString.h"
43#include "DocumentParser.h"
44#include <runtime/Error.h>
45#include <runtime/JSCell.h>
46#include <wtf/unicode/CharacterNames.h>
47
48using namespace JSC;
49
50namespace WebCore {
51
52using namespace HTMLNames;
53
54bool JSHTMLDocument::canGetItemsForName(ExecState*, HTMLDocument* document, PropertyName propertyName)
55{
56    AtomicStringImpl* atomicPropertyName = findAtomicString(propertyName);
57    return atomicPropertyName && document->hasDocumentNamedItem(*atomicPropertyName);
58}
59
60EncodedJSValue JSHTMLDocument::nameGetter(ExecState* exec, JSObject* slotBase, EncodedJSValue, PropertyName propertyName)
61{
62    JSHTMLDocument* thisObj = jsCast<JSHTMLDocument*>(slotBase);
63    HTMLDocument& document = thisObj->impl();
64
65    AtomicStringImpl* atomicPropertyName = findAtomicString(propertyName);
66    if (!atomicPropertyName || !document.hasDocumentNamedItem(*atomicPropertyName))
67        return JSValue::encode(jsUndefined());
68
69    if (UNLIKELY(document.documentNamedItemContainsMultipleElements(*atomicPropertyName))) {
70        RefPtr<HTMLCollection> collection = document.documentNamedItems(atomicPropertyName);
71        ASSERT(collection->length() > 1);
72        return JSValue::encode(toJS(exec, thisObj->globalObject(), WTF::getPtr(collection)));
73    }
74
75    Element* element = document.documentNamedItem(*atomicPropertyName);
76    if (UNLIKELY(element->hasTagName(iframeTag))) {
77        if (Frame* frame = toHTMLIFrameElement(element)->contentFrame())
78            return JSValue::encode(toJS(exec, frame));
79    }
80
81    return JSValue::encode(toJS(exec, thisObj->globalObject(), element));
82}
83
84// Custom attributes
85
86JSValue JSHTMLDocument::all(ExecState* exec) const
87{
88    // If "all" has been overwritten, return the overwritten value
89    JSValue v = getDirect(exec->vm(), Identifier(exec, "all"));
90    if (v)
91        return v;
92
93    return toJS(exec, globalObject(), impl().all());
94}
95
96void JSHTMLDocument::setAll(ExecState* exec, JSValue value)
97{
98    // Add "all" to the property map.
99    putDirect(exec->vm(), Identifier(exec, "all"), value);
100}
101
102// Custom functions
103
104JSValue JSHTMLDocument::open(ExecState* exec)
105{
106    // For compatibility with other browsers, pass open calls with more than 2 parameters to the window.
107    if (exec->argumentCount() > 2) {
108        if (Frame* frame = impl().frame()) {
109            JSDOMWindowShell* wrapper = toJSDOMWindowShell(frame, currentWorld(exec));
110            if (wrapper) {
111                JSValue function = wrapper->get(exec, Identifier(exec, "open"));
112                CallData callData;
113                CallType callType = ::getCallData(function, callData);
114                if (callType == CallTypeNone)
115                    return throwTypeError(exec);
116                return JSC::call(exec, function, callType, callData, wrapper, ArgList(exec));
117            }
118        }
119        return jsUndefined();
120    }
121
122    // document.open clobbers the security context of the document and
123    // aliases it with the active security context.
124    Document* activeDocument = asJSDOMWindow(exec->lexicalGlobalObject())->impl().document();
125
126    // In the case of two parameters or fewer, do a normal document open.
127    impl().open(activeDocument);
128    return this;
129}
130
131enum NewlineRequirement { DoNotAddNewline, DoAddNewline };
132
133static inline void documentWrite(ExecState* exec, HTMLDocument* document, NewlineRequirement addNewline)
134{
135    // DOM only specifies single string argument, but browsers allow multiple or no arguments.
136
137    size_t size = exec->argumentCount();
138
139    String firstString = exec->argument(0).toString(exec)->value(exec);
140    SegmentedString segmentedString = firstString;
141    if (size != 1) {
142        if (!size)
143            segmentedString.clear();
144        else {
145            for (size_t i = 1; i < size; ++i) {
146                String subsequentString = exec->uncheckedArgument(i).toString(exec)->value(exec);
147                segmentedString.append(SegmentedString(subsequentString));
148            }
149        }
150    }
151    if (addNewline)
152        segmentedString.append(SegmentedString(String(&newlineCharacter, 1)));
153
154    Document* activeDocument = asJSDOMWindow(exec->lexicalGlobalObject())->impl().document();
155    document->write(segmentedString, activeDocument);
156}
157
158JSValue JSHTMLDocument::write(ExecState* exec)
159{
160    documentWrite(exec, &impl(), DoNotAddNewline);
161    return jsUndefined();
162}
163
164JSValue JSHTMLDocument::writeln(ExecState* exec)
165{
166    documentWrite(exec, &impl(), DoAddNewline);
167    return jsUndefined();
168}
169
170} // namespace WebCore
171